Electrical Team Members: Thomas Hunt, David Belisle, Will Myers, Ali Alabdrabareda, Jesse Clifft

Advisor: Dr. Jeff McCullough

 The robot must do laps around the course, interpreting measured data to determine the correct path  Values at each task will be randomized every lap for every team  Each challenge run will last 4 minutes  Points will be assessed based on tasks completed at the end of the allotted time  Vehicle must operate solely in the active playing field

Circuit Design

Controller Selection Hardware Design

Objectives  Exploration of a maze-like course through line tracking sensors  Quick and accurate electrical and thermal measurements and data interpretation

•  DC voltage of unknown polarity •  Capacitance between two plates •  Temperature of a metal plate •  Interpret electrical signal waveform

Rules

 Three platform design separated by spacers  A tricycle design selected , caster in the front and motors in the rear  Line tracking sensors positioned in front of caster to prevent debris interfering with data  Spring loaded probes spaced accordingly for data reading  Ping sensor located on first platform for distance calculation  Source Code written in C language using the

Arduino ATMega1280 microprocessor, an open-source electronics platform

 Ardumoto Motor Driver Shield used to control two DC motors

 Voltage Circuit (Built) • Diode bridge design • Limit max voltage with voltage divider • Output through zener diode and infrared LED • Infrared receiver interpreted signal

 Capacitance Circuit (Built) • RC circuit design • Known resistance and capacitance • Charged to determine RC time constant

 Waveform Circuit (Built) • Pass signal through diode (half wave rectifier) to remove negative input • Charge capacitor to max voltage out of resistors • Read output as ADC

 Temperature Circuit (Bought) •  MLX90614 sensor • Infrared signal used to determine temperature from a distance • Uses I2C communication • High resolution